<template>
    <div class="app-container">
        <!-- 顶部header -->
        <mt-header fixed title="vue项目——商城">
				<span slot="left" @click="goBack" v-show="flag">
				<mt-button icon="back">返回</mt-button>
				</span>
		</mt-header>
        <!-- 中间的路由router-view区域 -->
		<transition mode="out-in">
        <router-view></router-view>
		</transition>
         <!-- 底部tabbar区域 -->
         <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-lib" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="/shopcart">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
					<span class="mui-badge" id="badge">{{ $store.getters.getAllCount }}</span>
					</span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="/search">
				<span class="mui-icon mui-icon-gear"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
        <!-- <h1>这是APP组件</h1> -->
    </div>
</template>

<script>
export default {
	data() {
		return {
			flag:false,
		}
	},
	created(){
		this.flag = this.$route.path === '/home'? false : true;
	},
	methods:{
		goBack(){
			//点击后退
			this.$router.go(-1);
		}
	},
	watch:{
		'$route.path':function(newVal){
			if(newVal === '/home'){
				this.flag = false;
			}else{
				this.flag = true;
			}
		}
	}
}
</script>

<style scoped>
    .app-container{
        padding-top:40px;
		overflow-x:hidden;
    }

	/* 切换动画 */
	.v-enter{
  		opacity:0;
        transform: translateX(-100%);
	}
    .v-leave-to{
        opacity:0;
        transform: translateX(-100%);
    }

    .v-enter-active,
    .v-leave-active{
        transition: all 0.3s ease;
    }

	/* 改类名，解决tabbar切换问题 */
	.mui-bar-tab .mui-tab-item-lib.mui-active{
		color:#007aff;
	}
	.mui-bar-tab .mui-tab-item-lib{
		display: table-cell;
		overflow: hidden;
		width: 1%;
		height: 50px;
		text-align: center;
		vertical-align: middle;
		white-space: nowrap;
		text-overflow: ellipsis;
		color: #929292;
	}
	.mui-bar-tab .mui-tab-item-lib .mui-icon {
		top: 3px;
		width: 24px;
		height: 24px;
		padding-top: 0;
		padding-bottom: 0;
	}
	.mui-bar-tab .mui-tab-item-lib .mui-icon ~ .mui-tab-label {
		font-size: 11px;
		display: block;
		overflow: hidden;
		text-overflow: ellipsis;
	}
</style>